Bí-kok chèng-hù ê gián-kiù, a-sng-chek-sò͘ kap CFC kâng-khoán, ē siau-sı̍t ô͘-jióng.
http://www.redorbit.com/news/science/1744466/nitrous_oxide_depleting_ozone_layer/
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Bí-kok chèng-hù ê gián-kiù, a-sng-chek-sò͘ kap CFC kâng-khoán, ē siau-sı̍t ô͘-jióng.
http://www.redorbit.com/news/science/1744466/nitrous_oxide_depleting_ozone_layer/
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